CPT 21390 Orbital Floor Repair Reimbursement | OpenPayer

Summary & Overview

CPT 21390: Orbital Floor Repair with Alloplastic Implant

CPT code 21390 designates open surgical repair of the orbital floor using an alloplastic implant after a blowout fracture from blunt facial trauma. This procedure restores the bony support of the eye, corrects enophthalmos or diplopia related to orbital volume changes, and addresses facial contour and function. Nationally, orbital floor repair is a key component of facial trauma care, intersecting emergency, reconstructive, and ophthalmic surgical services.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical indications and the typical surgical setting, along with payer coverage considerations and common billing practices relevant to inpatient and ambulatory surgical settings. The publication also summarizes benchmarks for utilization, relevant policy or coverage updates where available, and practical coding context to support accurate claim submission.

This executive summary is intended for clinicians, coding professionals, and policy analysts seeking a national perspective on clinical scope and payer coverage for surgical orbital floor reconstruction with alloplastic implants. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 21390orbital floor repairfacial trauma surgerymaxillofacial reconstructionalloplastic implantambulatory surgeryhospital operating roomsurgical codingophthalmic trauma

Billing Code Overview

CPT code 21390 describes surgical repair of the orbital floor (the bony support beneath the eye) following a blowout fracture caused by blunt facial trauma. The procedure involves a skin incision over the fracture site, reduction of bony fragments as needed, and placement of an alloplastic (synthetic) implant to restore orbital floor integrity, orbital volume, ocular support, and facial appearance.

Service type: Open surgical orbital floor repair with implantation of an alloplastic material
Typical site of service: Hospital operating room or ambulatory surgical center for surgical management of facial trauma

Clinical & Coding Specifications

Clinical Context

A 32-year-old male presents to the emergency department after an altercation resulting in blunt facial trauma. He reports periorbital swelling, double vision (diplopia) with upward gaze, decreased sensation in the infraorbital nerve distribution, and enophthalmos on exam. CT maxillofacial imaging demonstrates an orbital floor blowout fracture with herniation of orbital fat into the maxillary sinus and a step-off of the orbital rim. The ophthalmology and facial trauma surgical teams evaluate the patient; visual acuity is intact but ocular motility is restricted. After initial stabilization, the patient is scheduled for open reduction and internal repair of the orbital floor using an alloplastic implant to restore orbital volume and support the globe.

Typical clinical workflow:

Initial trauma assessment in the emergency department including airway, breathing, circulation, and focused facial exam.
Non-contrast CT maxillofacial imaging to define fracture pattern and soft-tissue herniation.
Multidisciplinary consults (ophthalmology and facial plastics/otolaryngology or oral and maxillofacial surgery) to assess ocular function and determine surgical indication.
Preoperative documentation includes operative consent, baseline ophthalmologic exam (visual acuity, extraocular movements, pupillary exam), and discussion of risks/benefits.
Procedure performed in the operating room under general anesthesia via transconjunctival or subciliary incision; dissection to the orbital floor, reduction of herniated tissue, and placement and fixation of an alloplastic implant to reconstruct orbital contour.
Postoperative care includes ophthalmic checks, instructions on activity and head elevation, short course of antibiotics as indicated, and scheduled follow-up for wound and vision assessment.

CPT 21325: Nasal Fracture Reduction via Nasal Incision

CPT-21320-CLOSED-REDUCTION-NASAL-BONE-FRACTURE-SPLINTING

CPT 21320: Closed Reduction of Nasal Bone Fracture with Splinting

CPT-21445-ALVEOLAR-RIDGE-FRACTURE-REPAIR

CPT 21445: Alveolar Ridge Fracture Repair

CPT-21432-CRANIOFACIAL-FRACTURE-REPAIR-WITH-FIXATION

CPT 21432: Cranium-to-Facial Fracture Repair with Fixation

CPT-21315-CLOSED-REDUCTION-NASAL-FRACTURE

CPT 21315: Closed Reduction of Nasal Bone Fracture

CPT-21461-MANDIBLE-FRACTURE-OPEN-REDUCTION-FIXATION

CPT 21461: Open Repair of Mandibular Fracture, Incision Approach

CPT-21407-ORBITAL-FRACTURE-OPEN-REDUCTION-INTERNAL-FIXATION

CPT 21407: Open Reduction, Internal Fixation of Orbital Fracture

CPT-21423-COMPLEX-MAXILLARY-FRACTURE-OPEN-REDUCTION-INTERNAL-FIXATION

CPT 21423: Complex Maxillary Fracture Open Reduction and Internal Fixation

CPT-21360-ZYGOMATIC-CHEEKBONE-DEPRESSED-FRACTURE-REPAIR-OPEN

CPT 21360: Repair of Depressed Zygomatic (Cheekbone) Fracture

CPT-21355-CLOSED-REDUCTION-ZYGOMA-FRACTURE-PUNCTURE-INCISIONS

CPT 21355: Closed Reduction of Zygoma (Cheekbone) Fracture via Puncture Incisions

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Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When substantially greater work is documented (unusual difficulty, extensive operative time) beyond typical for `21390`.
`23`	Unusual anesthesia	When procedure performed under general anesthesia for a normally local/regional procedure due to patient condition.
`50`	Bilateral procedure	When orbital floor repair is performed bilaterally during the same operative session.
`62`	Two surgeons	When two surgeons from different specialties perform distinct portions of the procedure.
`66`	Surgical team	When multiple surgeons function as an organized surgical team for complex reconstruction.
`78`	Return to OR for related procedure during postoperative period	When patient requires immediate reoperation for a complication related to the initial orbital floor repair.
`79`	Unrelated procedure or service by the same physician during postoperative period	If an unrelated surgical procedure is performed during the global period.
`LT`	Left side	To indicate left-sided orbital floor repair.
`RT`	Right side	To indicate right-sided orbital floor repair.
`59`	Distinct procedural service	When another separately identifiable service is performed at the same session and documentation supports separate procedures.
`52`	Reduced services	When the procedure is partially reduced or not completed as planned.
`53`	Discontinued procedure	When the procedure is terminated due to extenuating circumstances or patient safety.
`76`	Repeat procedure by same physician (note: not in provided list)	Data not available in the input.

Taxonomy Code	Specialty	Notes
207X00000X	Ophthalmology	Ophthalmic surgeons assess vision and may perform orbital floor reconstruction.
207C00000X	Ophthalmic Plastic and Reconstructive Surgery	Oculoplastic specialists often perform orbital fracture repairs.
207T00000X	Oral and Maxillofacial Surgery	Common specialty for facial trauma and orbital floor reconstruction.
207N00000X	Plastic Surgery	Facial plastic surgeons perform reconstructive orbital procedures.
2080P0206X	Otolaryngology (Head & Neck Surgery)	May be involved when midface fractures require multidisciplinary care.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S02.44XA`	Fracture of orbital floor, initial encounter	Directly indicates an orbital floor blowout fracture requiring repair.
`S02.4XXA`	Fracture of other bones of skull and face, initial encounter	Used when additional facial fractures accompany the orbital floor injury.
`H05.2`	Orbital cellulitis and abscess	Represents an infectious process that may complicate orbital trauma and affect surgical planning.
`H02.2`	Paralytic or paralytic ectropion/entropion (note: limited relevance)	May be listed when eyelid malposition requires concurrent correction.
`H53.2`	Diplopia	Symptom commonly resulting from orbital floor fractures and an indication for surgical repair if persistent.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`31231`	Nasal/sinus endoscopy; diagnostic, unilateral or bilateral	May be performed preoperatively or concurrently if sinus involvement or endoscopic assistance is used.
`42640`	Repair of nasolabial or infraorbital soft tissue (for facial laceration)	May accompany orbital surgery when soft-tissue lacerations require repair.
`21175`	Reconstruction, midface, with subperiosteal implant (e.g., graft, alloplastic material)	Related reconstructive code when facial midface reconstruction is required in conjunction with orbital floor repair.
`67040`	Removal of foreign body from orbit, external approach	Performed if intraorbital foreign material is present and requires removal during the operative session.
`70360`	CT imaging of the orbit and facial bones	Diagnostic imaging commonly performed preoperatively to define orbital fracture anatomy.

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